Our program first loads the track. Next it computes topological links between
facets.

The car moves from facet to facet in the 2d space defined by the surface of
the track. When moving, if there is no facet left, the car start falling down
until it lands on the track or until it reaches a given height (it will be
back on the track later)..

This game uses SDL and OpenGL. It runs under Linux, Unix and Win32 (no
project file for Win32, you will have to make it, sorry...)